Home / 39,568.98-54,605.20-21,665.14

Finding the Fourth Proportional to 39,568.98, 54,605.20 and 21,665.14

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Solution

The fourth proportional to 39,568.98, 54,605.20 and 21,665.14 is: 29,897.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,568.98 : 54,605.20 = 21,665.14 : x
  2. Step 2: Convert to fraction form
    39,568.98/54,605.20 = 21,665.14/x
  3. Step 3: Cross multiply
    39,568.98x = 54,605.20 × 21,665.14
  4. Step 4: Simplify right side
    39,568.98x = 1,183,029,302.73
  5. Step 5: Solve for x
    x = 1,183,029,302.73/39,568.98
  6. Step 6: Final answer
    x = 29,897.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.